Electricity and Circuits Definition, Types, Examples & Uses

Electricity and Circuits

Subject: General Science

Book: NCERT Science Class 10

Electricity flows in a closed circuit and powers appliances.
- **Ohm’s Law**:
- V = IR (Voltage = Current × Resistance).
- **Series and Parallel Circuits**:
- Series: Same current flows through all components.
- Parallel: Voltage remains constant across branches.
- **Heating Effect of Current**:
- Used in electric heaters and bulbs.
- **Electric Power**:
- P = VI (Power = Voltage × Current).

**Possible Exam Questions:**
1. What is Ohm’s Law? Explain with an example.
2. Differentiate between series and parallel circuits.
3. Why do electric appliances get hot when used for long periods?
4. How is electric power calculated?
5. Discuss household wiring and safety measures.